Semester 1 KIMIA kelas XII - IPA
Quiz
•
Chemistry
•
12th Grade
•
Practice Problem
•
Hard
Apa koh
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20 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
larutan NaOH 30 % massa memiliki massa jenis 1,33 g / ml . Molaritas larutan ini adalah ....
8,25
9,98
16,0
33,2
64,00
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Kemolalan larutan C2H5OH 20% massa ( Mr = 46 ) adalah ....
6,4
5,4
4,4
3,4
0,4
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Sebanyak 45 gram senyawa dengan rumus molekul ( H2CO )x dilarutkan dalam 500 gram air ( Kf air = 1,86 0C/ molal ) Jika titik beku senyawa ini 0,93 0C dan ar C = 12 H =1 dan O = 16 maka harga X adalah .....
12
10
8
6
4
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Molalitas suatu larutan yang mengandung 20% Berat C2H5OH ( Mr=46 ) adalah..
6,4 m
5,4 m
3,4 m
2,4 m
1,4 m
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Banyaknya MGSO4 ( Mr = 120 ) yang dilarutkan dalam 400 gram air untuk membuat larutan 0,5 m adalah..
24 gram
36 gram
48 gram
56 gram
72 gram
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Konfigurasi elektron yang benar untuk atom K dengan nomor atom 19 adalah....
1s2, 2s2, 2p6, 3s2, 3p6, 3d1
1s2, 2s2, 2p6, 3s2, 3p6, 4s1
1s2, 2s2, 3s2, 3p6, 4s2, 4p4
1s2, 2s2, 3s2, 3p6, 4s1, 4p5
1s2, 2s2, 2p6, 3s2, 3p6, 4s2
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Unsur oksigen dalam sistem periodik unsur terletak pada golongan ....
IIIA
IVA
VA
VIA
VIIA
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